Cannabis Cost Per Pound Calculator (Free) — Know Your Real Number

How to Calculate Cannabis Cost Per Pound (And Why Most Growers Don’t Know Their Number)

You know what you pulled last run. Do you know what it cost you to pull it? Most commercial cannabis growers can tell you their lb/light without hesitating. Ask them their cost per pound and you get a shrug, a rough guess, or a number that’s missing half the actual expenses. That’s like knowing your revenue but not your profit. You’re flying blind on the number that determines whether your facility survives.

Open the free cannabis cost-per-pound calculator to enter your facility costs, production, and yield scenarios. No signup required. The walkthrough below explains the inputs. The result is a model based on what you enter, not a replacement for your accounts or tax filings.

The Formula Is Simple. The Hard Part Is Knowing Your True Costs.

Here it is:

Operating Costs for the Period ÷ Saleable Dry Pounds Produced in the Same Period = Cost Per Pound

That’s it. Two numbers. But “total monthly operating costs” is where most cannabis cultivation operations fall apart. Growers tend to count the costs they think about every day (nutrients, electricity, labor) and forget about the ones that hit quarterly, annually, or just feel like “overhead.”

If you’re not counting everything, your cost per pound is a lie. A flattering lie.

What Actually Goes Into Total Cannabis Cultivation Costs

Build this list for your facility. Every line matters:

Facility costs: Use rent or a consistent allocation of owned-building costs. If you use an imputed rental value to compare an owned facility with a leased one, label that scenario and avoid counting the same building cost again through loan principal or depreciation.

Electricity: This is typically your biggest variable cost in indoor cannabis cultivation. You’re paying for lighting, HVAC, dehumidification, CO2 enrichment, irrigation pumps, and everything else running 24/7. Pull your last three utility bills and average them. Most facilities I’ve talked to underestimate this by 15-20% because they forget about office space, hallways, and equipment rooms on the same meter.

Labor: Cultivation staff, trim crew, management time, HR burden (taxes, benefits, workers’ comp). And here’s the one almost every owner-operator gets wrong: pay yourself a real salary and put it in this number. If you’re working 60 hours a week on the floor, assign yourself what you’d pay someone else to do that job. $80K, $100K, whatever the market rate is. Put it in the cost column. If you skip this and just take “whatever’s left” as your pay, you’re hiding labor cost inside your profit number. Your cost per pound looks lower than it actually is, your margins look healthier than they are, and you’re making business decisions based on a fantasy. The profit on top of your salary is your real margin. Everything else is you working for free and calling it a business.

Nutrients and growing media: All inputs, veg nutrients, bloom nutrients, additives, pH adjusters, growing media or coco, fertigation filters. This adds up faster than people think, especially on high-frequency fertigation schedules.

CO2: Cylinders or bulk tank fills. Easy to forget because it’s a separate invoice from a separate vendor.

Water and waste: Water costs are usually low, but waste disposal (runoff, plant waste) can be significant depending on your state’s requirements.

Compliance and licensing: Annual license fees, state fees, municipal fees, third-party audits, security system monitoring. Divide annual fees by 12 and put them in your monthly number.

Mandatory testing: Every state requires it. R&D testing, certificate of analysis per batch, failed batch retests. In Michigan we’re testing every batch and it adds up fast if you run multiple rooms.

Packaging and processing supplies: Bags, containers, labels, heat sealers, gloves, trim equipment supplies, jar supplies if you’re selling bulk flower.

Equipment maintenance and repairs: HVAC service contracts, sensor calibration, lighting replacements, irrigation system maintenance. Budget a percentage of equipment replacement value per year if you don’t have actuals.

Insurance: Commercial property, general liability, crop insurance if you carry it. Monthly premium divided out.

Allocated overhead: Accounting, legal, software subscriptions, internet, phone, any shared services across the business. Some of this looks small line by line. Together it’s not.

Example: What the Math Actually Looks Like

Let’s use an example: a two-room indoor facility with $45,000 in monthly operating costs and 80 saleable dry pounds produced over the same period. The numbers illustrate the math; they are not a claimed customer result or an industry cost benchmark.

$45,000 ÷ 80 lb = $562/lb cost

If wholesale flower is moving at $800/lb, that’s $238/lb margin. On 80 pounds, that’s about $19,000/month before debt service. Workable.

Now same facility has a rough month. Environmental issue mid-flower, yields take a hit. They pull 65 pounds instead of 80.

$45,000 ÷ 65 lb = $692/lb cost

Margin drops to $108/lb. Total margin: $7,000. That 15-pound shortfall just cost you $12,000 in margin. The costs didn’t change. The denominator did.

This is why a single bad batch can wreck a quarterly P&L. It’s not just the revenue you lost on those pounds. It’s that the same fixed cost base is now spread across fewer sellable units.

The Gotchas Nobody Accounts For

A few things that make cost per pound worse than your spreadsheet shows:

Trim labor has both fixed and variable parts. Setup, cleaning, and a minimum shift cost time even on a weak run. Paid hours can also rise with pounds processed, cultivar structure, or finish quality. Record the hours instead of assuming the bill is identical at every yield.

Electricity doesn’t scale with yield. You’re running the same HVAC, the same lights, the same dehumidification load regardless of what the plants decide to do. A 70-lb pull and a 50-lb pull cost almost the same to produce. The difference goes straight to margin.

A failed run can leave a full cycle of costs with little or no recoverable revenue. Keep its costs and disposition in the period being measured. Hiding the failed batch makes the remaining pounds look cheaper than they were.

Inconsistency belongs in the calculation. Add the costs of all comparable runs and divide by their combined saleable pounds. Do not take a simple average of per-run cost-per-pound figures when the runs produced different weights.

The Two Levers, and Why One of Them Is Mostly Stuck

To lower cost per pound, you have two options:

1. Cut avoidable costs. Some costs are fixed in the short term, but staffing, purchasing, runtime, maintenance, and waste still deserve a look. Use the actual fixed and variable split for your facility. A cheaper input or skipped service is no saving if it creates a more expensive crop problem.

2. Increase the denominator: more dry pounds, more consistently. This is where the upside lives. The same $45,000/month cost base that produces $562/lb at 80 lb produces $500/lb at 90 lb and $450/lb at 100 lb. Every pound you add to a run drops your cost per pound across the entire facility.

This is why yield consistency matters more than any single great run. A great run tells you what’s possible. Consistent runs at that level actually change your economics. One 90-lb run surrounded by 65-lb runs doesn’t fix anything. It just makes you feel better for a few weeks.

You Can’t Cut Your Way to Profitability in Cannabis Cultivation

I’ve seen operators try. They squeeze nutrients, defer maintenance, cut trim labor. The first two decisions usually cost more than they save. Deferred maintenance turns into emergency repairs, and thin nutrients show up in yield. Cutting trim labor means slower processing, which means delayed revenue and sometimes quality hits on flower that sits too long.

The growers I’ve seen actually move their cost per pound sustainably are the ones who get more consistent on yield. They figure out why their best rooms outperform their worst rooms. They stop repeating the same mid-cycle mistakes. They diagnose issues earlier so they don’t compound into lost pounds at harvest.

The economic structure of indoor cannabis cultivation rewards consistency more than any other single factor. Fixed costs are fixed. The denominator is what you control.

Run the Numbers on Your Own Facility

If you haven’t done this calculation recently, or ever, do it this week. Pull three months of costs, average your monthly pounds across that same window, and divide. Then break it down by room if you’re running multiple. I’d bet at least one of your rooms has a cost per pound that would surprise you.

Once you know your number, you know what it costs you to have a bad run. That tends to change how seriously you take things like early deficiency diagnosis, consistent VPD management, and dialing in your dryback. Not because you’re a better grower, but because you can see in dollars what a 10-pound variance costs you every month.

Know your number. Then attack it through the denominator.

Growgoyle connects the work behind the number: crop plans, daily assignments, room records, maintenance, and harvest results. It can attribute recorded labor and configured overhead to batches and help compare runs. Those allocations and modeled opportunities are management estimates, not invoiced accounting COGS or a promise of extra pounds.